I have this one friends with benefits / plate I've been seeing off and on for maybe four to six months. We see each other for like two-four nights a month. We watch netflix or a movie and then do some kinky sex. She's quite a bit younger (19, legal here) and loves to be dominated and tied up. Then we part ways the next morning. We share some snapchats here and there, then two weeks later we meet again for more. I like her as a friend, a friend with benefits, literally nothing more. Maybe she has LTR potential when she gets older.

Yesterday she matched this guy on Tinder, gives him her number. They text, he gives off a weird vibe, she ignores him and goes to sleep. He then proceeds to blow up her phone with calls. She answers angry and blocks him. He then spams her everywhere, even threatening her today he will do something tomorrow if she won't answer.

She came to me for advice. I told her to text me when she gets home safe tomorrow night. Of course I care for her as a friend, as a human. This beta douchebag has to fuck off. I told her to proceed to block him and ignore him. Don't answer, you will feed his disillusions. He actually thinks they had something.

How do I keep frame and stoic but also care for her and help her. I am worried this guy will hurt her. This has nothing to do with oneitis.

Edit : I've not told you guys the full story about the harassment. It's pretty serious, she shared some screenshots. This guy is nuts and I fear he will actually stalk or even hurt her.